Individuals with significant disabilities may face difficulties in:

The correct choice highlights that individuals with significant disabilities often encounter challenges in both indicating choices due to complex communication and expressive communication.

Complex communication can pose barriers because these individuals may not use traditional verbal methods to express their preferences or needs, making it difficult for them to indicate choices effectively. Additionally, expressive communication refers to their ability to convey thoughts, feelings, or desires, which can also be hindered by their disabilities.

Understanding social cues is a distinct skill set that can vary independently from the other communication challenges mentioned, and while it can also be difficult for some individuals with significant disabilities, it is not directly tied to the indications of choice and expressive abilities in the same way. Therefore, the emphasis on both complex communication and expressive communication directly addresses the multifaceted nature of the challenges faced by these individuals, making the combined option the most comprehensive and accurate choice.